Valve seat gauge



lApril 2, 1935. F, o. ALBERTSON Er Al. 1,996,092

VALVE SEAT GAUGE Filed Deza. 22, 1952 L4 2 Sheets-Sheet 1 April 2, 1935. F. o. ALBERTSONl ET AL 1,996,092

` vALyE SEAT GAUGE Filed Dec. 22, 1932 2 Sheets-Sheet 2 22.20.21 22u47, @4M/fm,

Patented Apr. 2, 1935 l "Leccese 'Y The present inventionr relates to valveza'sat gauges, and is particularly concernedywifth'gauges for indicating the condition of e. walveseatwjwith' respectv to the valve guide lor thefuniformityof elevation' auf a valve seat at 1a predetermined distance fromtire axisof a valve guide orthe la'ckpf these uualit'es'; i i" t f y IOne or the objects of the'gpresent .inveutionlis the 'provision oigan :impromedv commercial form of the valve 'seat gauges ofthe type disclosed in roui` prior applications, Ser; No. 487,134, filed 500:1A

tober 8., r1.930, which resulted inria/tent No; 15891',- 364, issued Decemberil, 1932,;an'd Ser. No.tllm6, -iled .March 19 32,- wilic-h resui'tedfin Patent No. 1,891,365, issued December 20, 1932,"boih` entitled Valve seat gauges. 2

- Another @bites nrt-be inventionslthegiimvia sion of an improved valvefseat'gange of thefcless described which simpierjin construction, more accurate than tlievalve :seat gauges fof the prim- Vart-and capable ci moreecouomical mamiesture, 'so that 4the :gauge mayjbe pla/ced vthe means of e large number fof users. f

AL,'*ertain of the Valve seat gauges ofthe prior art have provided with 'diaiwmamtnmfrhe dialinrlicatorihaviing :a feeler orfp'lunger which exigages'the upper end fof a ygauge .body or iii-nger carrier, or the upper end of a pilot stem;v the gauge body cri-Singer carrier fbeing rotatably and rcciproc'ably mounted on the pilot stem, the dial indicator either :mounteden the Vgauge fbody, migercarrier, or on the pilot stem.v

In such case, the gauge body cr :finger carrier carries .an adjuste/blesnger or .wiping arm which :slides over Vthe .surface of' the' Valve seat .as the gauge bodycr finger carrier is rotated on the pilotstem, and the. accuracy` of a gauge of :that typedepends upon the accuracy of the in;

termediate connecting .mechaniszm For stance,'wl.1erethe gauge body-slides under. .the plunger or eeler of the dial indicator., accuracfyV offfthel indicati-'on is dfepend'ent upon having ,the upper-end of `tire lingercarrierfor-fgauge .body exactly plane .and at right angles to the axis of the valve stein guide land pilot this surface is not accurately aia/right angles or has any depressions: or yirreguiarities into' which the plunger orr-feelerof the dial .indicatormay move, ltiren the dial indicator will indicate y,the irregularities of surface of the fend of the finger carrier or gauge bodyaiidrappearto show ir'- reguiarities in the .surface of the Y*vali/fe'. Y c

Under v'other 4condition-s,v the irregularities Y -orA lack' fof; concentrici-ty of a. valve, eeatsurfacemay not loe ,.properlyiindicated' olfrgttie dimlvvindicator siecount.-cfl the compensation l which 'results n from the irregularities in theisurface of the finger cator engages; f

etherfrypes, where me pmngerofuiediai .s

with which thev'plunger'ef the dialzindiindicator enga-ges the end.V of thepi'lot stem, "such l valve seat gauges cannot -beused with expanding Y pilots *ofZ the Atype;insuring en expanding screw at thel -top because `'the of the :screw -would not loeV accurately piane :nor atpriglrt :anglestofthe axis of the pilot stem., andwhereevena solid pilot stem is used inaccuracies may resultin sur-face ofthe of the piloti'stem..

indication ong'account er Vthe Variations` in th sion l,of an improvedvaive seat gauge employing a dial indicator and a feeler inv ttie'ifeel'er of thedialindicatcris jiorouglzrt intodirect en gagement lwiththe Valve seatgafuge, the dialy indicator being suitablymounted for wiping across Y the surface of avalve seataccording toa pre-l determinedfprimi-ple so that irregularitiesin the sea-t Lwill be indicated upon the dia-1 indicatori" Alherlobect of `the :invention` is the provi- ;ofg'an improved .dial-indicatorof Vthe class Ydesc-rlmzad:,l ,which may be utilized, `for relatively small'V valvesyandaiso for relatively large valves and-the provision offra vaivefseat gauge of thev class described-whichis elongated and relatively narrow,y in .structureso thatit may be used for engaging -thesuriace fof a 'Valve seat where' there i isr not much room-betweenthe valve lseat and;

adjacent parts 'anne-mer obj-eci `of mvetionf is the provi-r j siono'f ari-improved valve' seat 4gauge of the class described which may 'be'A utilized with several different types of pilotslof different sizes, strucexpandin'g .pilots and tapered Y expanding pilots,

with a Adegree n oiffaccuracy;

Other objects. and Yadvaiotagesy f Y Y Lm'beapw. Y ent from the-following descrigtionand the n j turgand chracteristicsf'such as tapered pilots', j c

accompanyingirlrawingm *WhiclciA similar char-y A actersI Lof; refe-rence indicatej parts I throughout theseverai,viewsli- Referring to the drawings,

of which there are two sheetsz i guide in section;

Fig. 2 isa side elevational Aview'taken from theright ofFig, 1`;-- p

Fig. 3 lis; a l;top, plan f view oi'ff the. .gaugefwith Vthe dial unit removed;

YFig. 4 is a sectional view taken on the plane of' the line 5 4 of Fig. 1;.

Fig. 5 is a 4sectional view taken onth'ejV`v` plane: on the line 5--5 ofrFig. 3; A

Fig. 6 isa side elevational,viewsiinilanto n Y' pilot-reterreditoabove.

1 of a modification; and f Fig. '7v is a top plan view@ offthepmodiication g Vof Fig. 6 withV the dial indicator jremved.`

' Referring toFigs. 1 to 5, the present Valve seat f., v

' 'body21 which may be orfg rsubsta'ntially cylindrical f shapefand whichv is preferably provided with' a pairf'otfaxially extending 5 bores 28, 29, located 'side'byside' and towardA one side ofv the cylindrical gauge, indicated in its entirety Vby. the numeral I0, is'shown'inconnectionwith la, relatively large valve'Y seatl I I 'arranged concentriallyz with ref:

spect kto'fa-"valve stem guide "'I2'. ThepresentAv valve seat gauges` may be used with'any oi-flthe'v vari'ou'stypes ofrvalve `stern pilots', such as,-forfex ample, the'iexpandingifpilotV "shown-in" our prior f tapered-'cylindrical pilotshown 'incur-prior ap-A plication' Serial-No. :538,504, filed' May 19, 1931,y

1 `perred, expanding .i pilots of ther-,type shown in YFiga 'f The @mbodimeni;V shown 1in-grigiA 1 is 'illustrated n in' connection withfal tapered-cylindrical lpilot I3 having a'substantially cylindrical'up'per part I4, having an upper flatvend I5.V "This typelof pilot isprovided -wltha Avery--g`1'a."clual1'yjtampered portionnl'rwhich 'extends overl approximately thesupper bell i-shapefd-V partiof` the valve'stem guide;v while the` pilotis-accurately centered by means :of .theglow'er Tand. 'accurately` cylindrical `part ofthe pilot I1 -nThe taper fis" .pre'fe'rably about i twentyrtwo thousandths of anainch perf: foot; 1 that" is,' the diameter of theipilot decreasestwenty-two thousandths ',of,l an inch' for each foot of its length;

and the vtaper is preferablywithin the ,range of Yfrom fteen to thirty thousandthsj per inch tathat the pilot may beforced 4down into theflxed urabnthef-wwf position by means ofV lthep cylindrical portion"I9 'and' witl'ija 'lower split 22.'- An'jeXpanding member-23 is thraded'into the threaded upper-endoffa' bore V24 and has its lower end wedging engagement with the ta- 1,996,092 g Y i pered bore between Vthe split ends of the pilot I8 and is thus adaptedto expand therlower endV vThe valvek Astein pilots Ywhicheinem1:11351cylindrical' middleportionfof' the valve-stem;'guide'. VV

of the pilot. Y

The lower end of the is about two-thirds the length of the customary valvestemY guides. Theipilot Aisalso preferably l pilot I8 isipreferably cylindrical in form, andthis cylindrical portion.

provided lwith avery graduallytapered'portion 1 26, the taper of which is within'the limits previously described for the tapered pilot I3 and adapted to securerthe pilot inplace-by'means of thewedging action ofthe pilot. 'Y

Itshouldbe no tedthat'the taperedportion Y Y I has a much more gradual taper than rthat which is shcwndnour. prior patent `orithe:v 'expanding Referring @againVV` to Fig. 1, anytypesof' the 'pilotsmay beutilizediin any of the modications.

The valve seat gaugepreferably comprises. a'm'etal v body, asrshow'n in Fig. 3. f' fi. 1 y Thev cylindrical body;21rmay :be provided @with be izsed upon relativelysmall'valves close to the The borez s ,isof a largesze adapted to n1;Y pilots having a cylindrical portionj I 4 vwhich is. larger than [the icylindrical portion `Iilfoi` the'pilot 'in Figge.; 1

The bore the other-type ,of pilots having a relatively .small upper cylindrical portion.. l ItA should be underf stood ,that various types of pilots'are provided, withvrvalveseat toolsjfor diferent'purposes, and

29 is Vof vsmallerfsi'ze adapted toiit* Y the :purpose of thextwo boresf28zand- 29 tov adapt thevvalve seat gauge'V forf use with`r pilots of various sizesmanufactured by Vthe applicants assignee'. f;- v, .n The metal.body 2'I is preferablyV provided4 with `an vaxially extending slot 3tlg'V communicating lwith n the boreY 28 and extending to the `outsideoi' theV Y' tbody, and Vwith anaxially extending slot 3I cornmunicating withithe bore 29jand extending to the xV 1 5U. stop member 3 2, formed like a piston; is'slidably n Y' 1 outside ot the gauge body. A"cylindri'cal metal mounted in the bore'23 and provided witha lower g flatfsurface33 for engaging the upper [end ofthe pilot: I 3. The :surface 33 is .accurately-plane and is ground toa hardened finished surface, and it is located exactly at right angles to the axisoLthe cylindrical stop member 32.1 The cylindrical stop Vmember 32 Vis provided with. a-flaterally project-.i ing threaded'stud 34 .which is`.threaded home in if athreaded bore 35 and projects outward'throughfi vthe slot 30.. Y Q g 1.,: iV Y g;

-;A' knurled thumb nut 36 is threaded fon the end 1 n Vofthe stud-34j and is adapted .to clampl the Vstop member 32 `in anyV of plurality of 'positions-lon-v gitudinallyfof the bore 28.Y In' a similar manner the smaller 'cylindrical 4stop member` 3 1 is.pro-

vided with alower Vilat surface 38 and withV a` threadedstud`39 engaged by khurled nut Y4I); '-I'he 1 stop members 32 and 31.1may beinserted in their 1 Yboresircim-the upper ends Acit the slots {30'- and 3|, as Vit will-be'apparentl from Fig;l Zfthat the slots 30', 3-I extend out of the upper en d'ofV the 'metall body' 2'I. *When'lthe gauge` is asser'nbled, however, the stopmember's 32', 3'Icannot fall""'out of their .bores onacjcountpf the presence of the VthegaugeIrinayvbe usedI tor indicate regularity of elevation l of .they valve' seat at'any predetermined radiusn. 1 j Y Y The` operation? of'.the=device of Figs,- 6. and 7 lis substantially the 'samefexcept' that the adjustable wiping armlahas its length. adjustedat its sup- "port,V without changing ure :arigunufl position .Y or 'Y thedialfindicator. itself. The memberl consists of a-stopiscrew having' its-inner end .85 engaging in alslotBG inztheexten'sion rod-13 to prevent the extension rod'from .falling out offthe gauge.

' Both of thetypes ofgauges kbringtheffdiajlindicator plungerlor its'extnsion in direct engage- Y Vment with the valve seat, andV they eliminate the use of Vintermediate linger carriers 'which-intro- 1 duce aiactori-ofiinaccuracy, :depending upon the accuracy of the plane'surface at: theend of the ont ofthe .United sintesis: .o Y Y Y 1; A valve seat gauge comprising-a dial indicator Y VVringer carrier-uponfwhichithe plunger vengaged-in thedevices offthepriorzxart.VV v Y The present devices lare ialso'most simple and capable ofmanufactr'e more cheaply so that they can Vbe sold at: a loweriigurepandzbrought within Y the means ofa vast numberjotpurchasers. ,o

YWhilezwe have .illustratedtwo: preferred embodiments of :our-,.invention'; many; modiiications maybe made v4without departing from then-spirit l of the invention,A and we do notwishtobelimitedto the precise details of construction set forth,

Ybut' desireto -avail ourselvesof all changes within the scope ofithe appended Vclaimsori 1 1 Having thusdescribedi'our invention, -Vw liat'.\`ivef claimA is'newianddesire to secure by LettersPat- Y ment with a valve vseatadjacent the llower zend' ofsaidbody,V andosaid body hiwing-,a' substantially flatv side adjacent said plunger. wherebvsaid plunger Vmay. Vibe. located adjacentQthe, .pilot for measurement of relatively small valve seats@l j 2. Agvalveseat gauge comprising, a dial indie Y cator having a plunger, av substantially cylindrical. body, saidV cylindrical body being provided Y with means :for pivotally' mounting Ythe 1 dial ingdicator at itswupperend with the indicator plunger carried by said indicator, :and lextending substanmuy iongiiudinouy ofsaidgaugobodyfor dii-ect engagement with a "valve Lseat vadjacent-the lower end of 1^ said-body, said :bodyfhaving asubstantially flat side`r adj acent said iplunger; whereby said plunger may v be located adjacent the; pilot for' measurement Vof relatively,smallvalve' seats',

and Vadjustablestop membersk mountedginxeach of said `Vboresfor engagingvtheend of the pilot. stem. -Y f i 73.11A valveseat gauge comprising a dial indi# /cator havinga plunger, al substantially cylindrical bodyf; said cylindrical body being'provided with vmeansA for pivotally mounting the'dial indicator Vat rits .upper endlwith 'fthe indicator-'plunger car;-`A` Vrie'd by said'indicator!and extending's'ubstantially Y longitudinallygofsaidgauge body for direct fengalgement with .a :valve seat adjacent the 'lower end of saidbodyfa'n ad'justablefguide carried by` `the gauge slidably;engagingA` the i dial indicator plunger adjacentits lowerend, andfmeans forsecuringsaid guideinanylffapluralty ofposi-j Y tions radially o I bodyi'.- V75 with respect into Sthefaxis fofx said 4. A.' valve: seat-gauge V:comprising .dial

'Leganes oator: miving` a plunger; a substantially ,cylindre oai said oyundrioai body .beingprovided with means for Ipivotally' mounting` the dial :indicator Aatitsfupper end with the :'indicatorfplunger rcar-` Vried by said indicatorY and .extending substantially longitudinally :,ovfsaidi gaugegbody for! direct en-' gagement ,with:a' valveseat; adjacent the ,flower end o1? :said body, anzadju'stable guideia'rried by the gauge slidably :engaging i the dial jA `indicator plunger adjacent itsV lower end, meansy for securii ing said guide in. any of apluralityot positions radially with respect-tortue axis ofsaidbodycomj--` prising a stud carried bysaidjbody, .a lclamping member carried bythe studyand an arm adjust-v ably Vmounted i on: said -studv and carrying t said 811ide...V Lv I -5. In a valve seat gauge'the combination lofy va;

pilot stem adapted -to befixedly secured in'avalveVV stem vfguidefwithaggauge `body rotatably and slidiably :mounted on. said zpilotstem, means for preventing downward sliding movementof said body on. said stem, afdial indicator pivo'tallyf mounted on said gauge body and' havinga downwardly extending plunger., isaidplunger; being `adapted to engage the valve seatfandadjustable meansfor guidingrsaid plunger and vholding s'adzplunger and dial 'indicator in predetermined'fangul'ar position toy engagea valve seatfwhereby the :dial indicator will indicate vthe Virregularities of saidfvalve seat as the gauge body is rotated on saidvpilotff, lv y6.* Inv a;v alve seatfgauge theicombinationof a pilot stem adapted to be llxedly-,securedin ay valvestem guide with agauge'body rotatably fand slidably mountedon saidfpilotistem,.means:for preventing downward slidingmovement ofV said body. on ,said` stein,` ja ydial ,indicatorfpivotally mounted on-saidlgaugebody-and havin'ga down.-

Vwardly.Y extending plungergrfsaid plunger being adapted, to; engage the valvejri-seaaladjustable means for guiding said plunger and holding said plunger and v dial indicator.. in predetermined angular position toengage aivalve seat'wherebythe l dialindicator willfindicate; `the irregularities of saidvalve seatnasthejgauge body-is rotated on vsaid :piloti saidl adjustable means# comprising -a.

stud carried `by said Saug@ body,.a clamping membercarriedl by the stud,.a1lat erally projecting arm,

and -a plunger guideL Piwotally vvmounted for; said" 'l laterallyprojecting arm,-y ;:.f;

7 In a; valve seat gauge; .the Vcombinatiorii ofi-'a pilotstemy adapted-to be ,fflxedly-secured in a valve 'stem guide with a f gauge bodyrotatablyand slidably mounted on s'aidv.pilot stein,- a.` dial indicator pivotally mounted fon said gauge body and having a Ydowrilwaljdly,-jextending ;plunger,

said plunger being adaptedtdeng-age `thezvalve seat, andf'adjustablefmeans vfor .guiding sad plungerand holding said plunger and dial indica- Y tor *in predetermined angular position to engage a valve seat E whereby. g the dial indicator will indicate-theirregularitiesof said valve-seat as the gauge bodygi's rotated on saidtpilot, said gauge" Abody Vhaving t a :bore .extending throughthe sameY forrotatably mounting said body'onsaid' pilot stem; andi a stop.; member-.slidably adjusti ably'A mounted lin x saidf'borej for engaging"v the top of the pilot memberiv ev- 8'. .In avalve, seat gauge;l the combination offa pilot stem adapted to'ibeaflxedly secured in -a valve stema guide with azgauge V:body slidably and rotatably :mountedionrsaid pilot stem, said-[gauge bodyhavinga.boreaengagingfthe upper part.;of

said *pilot-stem; an. 'adjustablestop mounted in said bore to `engage thefup'per* endV o! i said ,pilot stem, :a .dial indicator having a,`V plunger-:mount-4 ed in the upper end of said gauge body, an extenerally projecting wiping arm angularly and'lonygitudinally adjustable upon said, extension for wiping across the surface of a valve seat and actuating said dial indicator when said gauge body is rotatcdon said pilot stem. 1 l

9. In a valve seat gauge, the combination of a pilot stem adapted to be fixedly secured in a valve stem guide with a dial indicator rotatably supported upon said pilot stein, said dial -indicator having a feeler and said feeler being adapted to be brought into direct engagement with the valve seat at a predetermined radius from the valve stem guide axis and adapted to traverse the valve seat upon rotation of said indicator on said stem whereby irregularities in the valve seat are indicated by the dial indicator.

a pilot stem adapted to be xedly secured in a 'v valve stem guide with a dial indicator `'rotaettably supportedr upon said pilot stem, said dial indi-V l5, cator having a feeler and saidieeler being Y adapted to bebrought into directrengagement with the valve seat at a predetermined 'radius from the Valve stem guide axis and adapted to 10. `In a valve seat gauge, the, combination of traverse the valve seat upon rotation of said in-l feeler at anangle to the axis of the pilot with the end of the feeler engaging the end of thev valve seat surface whereby thegauge maylbe used for valves of different diameters.A

FRANS o, ALBERTSON. AXEL MADsEN. 

